There are a lot of bad bloggers out there. But only Mickey Kaus seems to have that special talent for swallowing vacuous talking points and attempting to dress them up as incisive and original commentary. At least the folks at the Corner are obviously working for the Cause. Kaus, though, is the world's most widely-read concern troll.

Today, we get an Obama-related double whammy. The ever-insightful Kaus not only worries about Obama's supposed lack of "substance," he faithfully reminds us that Obama has not yet had his Joe Klein-approved "Sistah Souljah Moment." And we all know how Very Important for Democrats that is.

On the first point, Kaus acknowledges some of Obama's wonky legislative work. But, he says:

It's not the same thing as confronting deeper, bigger, less easily addressed problems: How to structure the health care system, how to pay for entitlements, how to confront the terror threat, the rise of China, the problems of trade and immigration, the increase in income inequality at the top.

Okay, that's fair enough. We do need to hear these things, considering that Obama failed to solve them all during his first two years as a Senator. But, uh, why aren't we hearing such loud demands that any other candidate - Republican or Democrat -provide clear answers to these questions? Do you automatically earn "substance" the longer you're in the Senate? Does "experience" exempt you from having to explicitly address the big questions of the day? Quick, without looking it up: can you tell me what plans Hillary and McCain have to tackle each of these issues?

Or is this just the line on Obama?

In fact, I do think that the Democrats have a number of smart, accomplished candidates, and I'll certainly grant the need to hear more from Obama. But considering that he hasn't even officially begun to campaign yet, I figure there's a little bit of time for that.

Meanwhile, there's plenty of time for Kaus to yammer on about stupid things like "Sistah Souljah moments." Kaus asks: "What's the word for trumped-up contrarianism?"